link-property-registration.txt

o Property Identifier: http://remotestorage.io/spec/version

o Link Type: N/A

o Description: For a link that points to the storage root of a user's
    account on a remoteStorage server, the version of the remoteStorage
    spec which the server implements.

o Reference: https://github.com/remotestorage/spec/blob/648c5868faf260092ea2f1dfbd6e9ce2ebf553bd/draft-dejong-remotestorage-head.txt#L378

o Notes: Example values are "draft-dejong-remotestorage-02",
    "draft-dejong-remotestorage-03", etcetera, refering to the Internet
    Draft versions describing the server's behavior.